All names: LSPM J2347+0223, USNO-B1.0 0923-00776538, PM J23478+0223, Gaia DR2 2646617809106367360, LP 643-71, 2MASS J23475375+0223407, NLTT 57996, SDSS J234753.62+022339.7
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 23 47 53.74 (0.2) | |
| Declination | 02 23 40.82 (0.1) | |
| Spectral type | DA | |
| Effective temperature | [K] | |
| log(g) | [cgs] | |
| Mass | [M☉] | |
| log(Luminosity) | [L☉] | |
| Cooling age | [Gyr] | |
| log(H/He) | ||
| log(C/He) | ||
| log(Ca/He) | ||
| log(Ca/H) | ||
| Parallax | [mas] | 14.38 (0.3) |
| Distance | [pc] | 69.55 (1) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -180.927 (0.5) |
| Proper motion (declination) | [mas/yr] | -124.979 (0.3) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.80 | |
| V magnitude | ||
| R magnitude | 17.50 | |
| I magnitude | ||
| J magnitude | 16.44 (0.1) | |
| H magnitude | 16.28 (0.2) | |
| K magnitude | ||
| u magnitude | 19.90 (0.04) | |
| g magnitude | 18.54 (0.008) | |
| r magnitude | 17.89 (0.006) | |
| i magnitude | 17.66 (0.007) | |
| z magnitude | 17.54 (0.02) | |
| G magnitude | 17.99 (0.002) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.